- Align the backend seeded default surgery template with the report editor's default report content.
- Add backend demo defaults for the default template, Kimi provider, and Xunfei speech proxy configuration.
- Change system reset into a super-admin demo mode factory reset that clears reports, audit logs, files, custom templates, and non-default users.
- Keep only the default admin, manager, doctor, and default surgery template after demo reset.
- Replace the old local-only reset all data button with a two-confirmation backend reset flow.
- Add tests covering demo default alignment and database-backed demo reset behavior.
- Update docs to describe demo mode reset semantics and production credential cautions.
